00559naa#a2200181#i#450# EN\INFRA-M\bibl\12270 /en/manage/index 20250417164308.4 1998-0728 20160617b2016####ek#y0engy0150####ca RUS RU Factors of Development of Primary Education and Their Measurement Methods in the West Journal article Moscow INFRA-M Academic Publishing LLC. 2016 3 с. Journal article local Pisareva L. fht.editorum.ru /en/manage/index